Neurokinin antagonists

ABSTRACT

The invention relates to new compounds of general formula I ##STR1## and the pharmaceutically acceptable salts thereof, wherein A, B, Z, R 1 , R 2 , R 3  and m are defined as in the specification, processes for preparing them and pharmaceutical compositions containing these compounds. The compounds are valuable neurokinin (tachykinin) antagonists.

The invention relates to new compounds of general formula I ##STR2## and the pharmaceutically acceptable salts thereof, processes for preparing them and pharmaceutical compositions containing these compounds. The compounds are valuable neurokinin (tachykinin)-antagonists.

The International Patent Application WO 93/10073 describes compounds having a similar structure and a neurokinin-antagonistic activity. These compounds are specifically excluded from the subject matter of the present application.

The present invention relates to compounds of general formula I ##STR3## and the pharmaceutically acceptable salts thereof, wherein A denotes Ar, Ar--CH₂ --, Ar--CH(Ph)--, Ar--(CH₂)₂ --, Ar--CH(Ph)--CH₂ --, Ar--CH₂ --CH(Ph)-- or Ar--CH(Ph)--CH(Ph)--,

wherein Ar denotes phenyl, naphthyl, pyridyl or thienyl and

Ph denotes phenyl, whilst the phenyl groups contained in these groups may be unsubstituted or substituted by one, two or three R⁴ groups, wherein these

R⁴ groups independently of one another denote (C₁₋₆)alkyl, (C₁₋₆)alkyl substituted by 1 to 3 fluorine atoms, (C₁₋₆)alkoxy, (C₁₋₆)alkylthio or halogen, or two adjacent R⁴ groups together denote --O--(CH₂)--O-- or --(CH₂)₃₋₅ --;

B denotes --CH(R¹²)--,

--CH₂ --CH₂ --,

--C(O)--,

--C(O)--NH--,

--C(O)--CH₂ -- or

--C(O)--CH₂ --CH₂ --; wherein

R¹² denotes H or CH₃ ;

R¹ denotes H, (C₁₋₆)alkyl or phenyl;

R² denotes H, (C₁₋₆)alkyl or --C(O)(C₁₋₃)alkyl, wherein the alkyl groups contained therein may be substituted by a phenyl group;

R³ denotes hydrogen, (C₁₋₆)alkyl, (C₁₋₆)alkyl substituted by 1 to 3 fluorine atoms, halogen or (C₁₋₆)alkoxy;

m is 1, 2 or 3;

z is di(C₁₋₆)alkylamine, ##STR4## wherein R⁷ denotes hydrogen, (C₃₋₇)cycloalkyl, phenyl ##STR5## (C₁₋₆)alkyl, allyl, --(CH₂)₂₋₆ OH,

--(C₁₋₃)alkylphenyl, diphenylmethyl or

--(C₁₋₃)alkyl(C₃₋₇)cycloalkyl, whilst the phenyl groups contained in the above-mentioned groups may be unsubstituted or substituted by one or two substituents, namely CH₃, F, Cl, OCH₃, SCH₃, CF₃, OH or NO₂, or they may be substituted by --O--CH₂ --O-- linked to 2 adjacent carbon atoms of the phenyl;

R⁸ and R⁹ have the meanings given under the definition of R⁷ or denote

--CH₂ OH

--OH ##STR6## wherein the last six groups mentioned are in position 3 or 4, in the case of R⁸, and in position 3, in the case of R⁹, and wherein

R¹⁴ denotes H,

(C₁ -C₆) alkyl,

phenyl or cyclohexyl,

whilst if one of the R¹⁴ groups is phenyl or cyclohexyl, the other R¹⁴ must be hydrogen;

With the exception of compounds of general formula I wherein

A, R³ and m are as herein before defined;

B denotes --CH--₂,

R¹ denotes H, alkyl or phenyl,

R² is H and

Z is --N(CH₃)₂, ##STR7##

Compounds of general formula I contain basic groups. The compounds of general formula I can therefore occur in the form of salts with pharmaceutically acceptable inorganic acids such as hydrochloric acid, sulphuric acid, phosphoric acid, sulphonic acid or organic acids (such as, for example, maleic acid, fumaric acid, citric acid, tartaric acid or acetic acid).

The compounds of general formula I may contain chiral centres: the formulae given includes the mixtures of isomers as well as the individual isomers.

The terms "alkyl" and "alkoxy" appearing in the definitions include both branched and unbranched alkyl and alkoxy groups.

Preferred compounds of general formula I are those wherein

A represents Ar, Ar--CH₂ --, Ar--CH(Ph)--, Ar--(CH₂)₂ --, Ar--CH(Ph)--CH₂ --, Ar--CH₂ --CH(Ph)-- or Ar--CH(Ph)--CH(Ph)--, wherein Ar denotes phenyl or naphthyl and Ph represents phenyl, whilst the phenyl groups contained in these groups may be unsubsituted or may be substituted by one, two or three R⁴ groups, wherein these

R⁴ groups independently of one another denote (C₁ -C₃)alkyl, (C₁ -C₃)alkyl substituted by one to three fluorine atoms, (C₁ -C₃) alkoxy, (C₁ -C₃)alkylthio or halogen, or two adjacent R⁴ groups together denote --O--(CH₂)--O--;

B denotes --CH(R¹²)--,

--CH₂ --CH₂ --,

--C(O)--,

--C(O)--NH--,

--C(O)--CH₂ -- or

--C(O)--CH₂ --CH₂ --; wherein

R¹² denotes H or CH₃ ;

R¹ denotes H, (C₁₋₃)alkyl or phenyl;

R² denotes H, (C₁₋₃)alkyl or --C(O)(C₁₋₃)alkyl, whilst the alkyl groups contained therein may be substituted by a phenyl group;

R³ denotes hydrogen, (C₁₋₃)alkyl, (C₁₋₃)alkyl substituted by 1 to 3 fluorine atoms, halogen or (C₁₋₃)alkoxy;

m is 1, 2 or 3;

and Z is as herein before defined.

Particular mention should be made of compounds of general formula 1 wherein A is phenyl, benyzl, diphenylmethyl or naphthyl, particularly compounds wherein A is unsubstituted phenyl or phenyl substituted by 1 or 2 R⁴ groups, these R⁴ groups independently of one another representing methyl, trifluoromethyl, methoxy, thiomethyl, fluorine or chlorine, preferably compounds wherein A is phenyl or methoxyphenyl; and/or

B is --CH₂ --,

--CH--(CH₃)--,

--CH₂ --CH₂ --,

--C(O)--,

--C(O)--NH-- or

--C(O)--CH₂ --

and/or R¹ is hydrogen; and/or R² is --C(O)CH₃ or hydrogen; and/or

R³ is hydrogen, methyl, trifluoromethyl, methoxy, i-propoxy, fluorine or chlorine and/or

m is 1 or 2;

particularly wherein m is 2 and are R³ is trifluoromethyl in positions 3 and 5 or wherein m is one and R³ is i-propoxy in position 3; and/or

Z denotes ##STR8## wherein R⁷ denotes (C₅ -C₇)cycloalkyl, phenyl ##STR9## (C₁ -C₃)alkyl, allyl, --(CH₂)₂ OH,

--(C₁ -C₂)alkylphenyl, diphenylmethyl or

--(C₁ -C₂)alkylcyclohexyl,

wherein the phenyl groups contained in the above-mentioned groups may be unsubstituted or substituted by one or two substituents, namely CH₃, F, Cl, OCH₃, SCH₃, CF₃, OH or NO₂ or may be substituted by --O--CH₂ --O-- which is linked to two adjacent carbon atoms of the phenyl, particularly wherein Z is piperazinyl substituted by R⁷ or wherein Z is homopiperazinyl substituted by R⁷ or wherein R⁷ is (C₅ -C₇)cycloalkyl, preferably cyclohexyl, or wherein ##STR10## wherein R⁸ is preferably --OH ##STR11## in position 4.

Test results for compounds according to the invention:

The receptor affinity for the NK₁₋ receptor (substance P-receptor) was determined on intact human lymphoblastoma cells (IM-9) which express NK₁ -receptors, and the displacement of ¹²⁵ I labelled substance P was measured.

The IC₅₀ or K_(i) values thus obtained are:

    ______________________________________                                         Compound         IC.sub.50                                                                             K.sub.i                                                Example No.       nM!    nM!                                                   ______________________________________                                         001                     333                                                    002                     909                                                    003                     800                                                    019                     580                                                    020                     520                                                    022                     154                                                    023                     108                                                    026                     7                                                      027                     111                                                    028                     102                                                    029                     119                                                    030                     90                                                     031                     93                                                     032                     23                                                     034                     38                                                     035                     16                                                     036                     18                                                     039                     16                                                     049                     37                                                     053                     5                                                      054                     20                                                     057                     64                                                     058                     23                                                     061                     851                                                    062                     276                                                    064                     273                                                    065                     7                                                      066                     23                                                     067                     14                                                     068                     3                                                      069                     16                                                     075                     700                                                    078                     250                                                    079                     46                                                     080                     43                                                     081                     90                                                     082                     52                                                     083                     209                                                    086                     368                                                    089                     80                                                     091                     2                                                      096                     185                                                    097                     300                                                    105                     78                                                     107                     250                                                    108                     34                                                     110                     28                                                     111                     12                                                     112                     1000                                                   113                     403                                                    114                     490                                                    115                     30                                                     116                     24                                                     117                     15                                                     120                     36                                                     121                     124                                                    123                     600                                                    142                     650                                                    146                     115                                                    147                     190                                                    148                     286                                                    150                     717                                                    151                     215                                                    156                     479                                                    158                     905                                                    166                     150                                                    167                     1000                                                   169                     888                                                    170                     84                                                     171                     898                                                    172                     173                                                    175                     230                                                    176                     92                                                     177                     10                                                     ______________________________________                                    

The compounds according to the invention are valuable neurokinin (tachykinin)-antagonists which have both substance P-antagonism and also neurokinin A- or neurokinin B-antagonistic properties. They are useful for the treatment and prevention of neurokinin-mediated diseases such as respiratory complaints, e.g. asthma, bronchitis, rhinitis, coughs or expectoration as well as inflammatory eye diseases such as conjunctivitis, inflammatory skin diseases such as dermatitis and urticaria, inflammatory intestinal disorders such as ulcerative colitis or Crohn's disease, other inflammatory diseases such as polyarthritis or osteoarthritis and pain (e.g. migraine or vascular headaches) and vomiting.

The invention therefore also relates to the use of the compounds according to the invention as remedies and pharmaceutical preparations which comprise these compounds. They are preferably used in humans. The compounds according to the invention may be administered by intravenous, subcutaneous, intramuscular, intraperitoneal or intranasal route or by inhalation, transdermally, optionally with the aid of iontophoresis or enhances known from the literature, and by oral route.

For parenteral use the compounds of formula I or the physiologically acceptable salts thereof, optionally together with conventional substances such as solubilisers, emulsifiers or other adjuvants, may be made into solutions, suspensions or emulsions. The solvents may be, for example: water, physiological saline solutions or alcohols, e.g. ethanol, propandiol or glycerol, sugar solutions such as glucose or mannitol solutions or a mixture of various solvents.

In addition, the compounds may be administered by means of implants, e.g. of polylactide, polyglycolide or polyhydroxybutyric acid or intranasal preparations. The compounds according to the invention may be prepared by methods which are generally known. One method of synthesis is shown in the following scheme. The symbols A, Z, B, R¹, R², R³, R¹² and m used therein are defined as herein before. ##STR12##

By reacting corresponding carbonyl compounds IIa with suitably substituted amines IIb and "cyanide sources", normally with the addition of acidic compounds, initially in step a) aminonitriles III are prepared with an amine component Z. The methods of aminonitrile synthesis known in the literature may be used. The cyanide sources used may be potassium cyanide, sodium cyanide, trimethysilylcyanide, acetonecyanohydrin and others: potassium cyanide is preferred. The acid compounds used may be acetic acid, citric acid, inorganic acids, acid salts such as sodium bisulphite, potassium bisulphite and others; hydrochloric acid is preferred. The solvents used are preferably solvents such as methanol, ethanol, diethylether, tert.-butylmethylether, tetrahydrofuran, dioxan, methylenchloride or acetonitrile, including mixtures with water. Preferably, diethylether, tetrahydrofuran and ethanol, as well as mixtures thereof, are used in admixture with water. The reaction may be carried out at temperatures from -10° C. to 40° C., preferably at temperatures in the range of 0° C. to room temperature. If trimethylsilylcyanide is used as the "cyanide source", the work is preferably carried out with ethers in the absence of water and in this case zinc iodide is preferably used as the acid compound. The aminonitriles III may also be synthesised, as known in the literature, via the intermediate step of an imine or immonium salt, which can be obtained from the carbonyl compound IIa and the amine IIb, by the addition of cyanide. Similarly, a cyanohydrin may be prepared by known methods, first from the carbonyl compound IIa with cyanide, and this cyanohydrin can then react with the amine IIb to form the aminonitrile III.

The aminonitriles III are reduced in step b) to the diamines IV. The methods conventionally used for reducing nitriles to amines may be used for this step. Catalytic hydrogenation, preferably with Raney-nickel as catalyst, preferably in the presence of ammonia, and reduction with borane-dimethylsulfide complex, borane-tetrahydrofuran complex, sodium borohydride, preferably in the presence of catalysts such as cobalt chloride or Raney-nickel, with lithium aluminium hydride, particularly in the presence of catalysts such as aluminium chloride, with diisobutylaluminium hydride and with alane or lithium aluminium hydride in the presences of an equivalent amount of conc. sulphuric acid are suitable. The use of lithium aluminium hydride in the presence of an equivalent amount of conc. sulphuric acid is preferred. The solvents used are ethers, preferably diethylether, possibly in admixture with tetrahydrofuran. The reaction temperature may be in the range from -78° C. to reflux temperature and the work is preferably done at temperatures of -5° C. to 10° C.

Alternatively, the diamines IV may also be obtained by adding the amine IIb to a nitroolefin VII (step e)) using methods described in the literature and subsequently reducing the nitro group, again using methods known from the literature (step f)).

If B denotes a group --C(O)--NH--, the diamine IV in step c) is reacted with a corresponding isocyanate. Inert solvents such as methylene chloride, chloroform, diethylether, tertbutylmethylether, tetrahydrofuran, dioxan, petroleum ether, toluene, xylene and acetonitrile may be used, but preferably methylene chloride is used. The reaction is carried out at temperatures between -20° C. and 40° C. preferably at ambient temperature.

If B denotes a group --C(O)--, --C(O)--CH₂ -- or --C(O)--CH₂ --CH₂ --, the diamine IV is coupled with a carboxylic acid ##STR13## in step c) to form the amide. The methods conventionally used in preparative chemistry, including, in particular, peptide chemistry, are used for this. The carboxylic acid is activated in the form of its acid chloride or activation is carried out using carbonyldiimidazole, dicyclohexylcarbodiimide, diphenylphosphorylazide, diisovalerylchloride, diethylphosphorylcyanide and other activating reagents known from peptide chemistry. It is preferred to use diethylphosphorylcyanide. The activation and coupling are preferably carried out in the presence of auxiliary basis such as triethylamine, pyridine etc., or in the case of acid chlorides aqueous alkali metal hydroxide solution. Preferable, triethylamine is used. The reaction may be carried out in solvents such as dimethylformamide, tetrahydrofuran or acetonitrile, dimethylformamide being preferred. The work is done at temperatures between -10° C. and 40° C. preferably at ambient temperature.

If B represents a group --CH(R¹²)-- or --CH₂ --CH₂ --, the diamine IV in step c) may be reacted, using methods known from the literature, with ##STR14## wherein X is a leaving group such as chlorine, bromine, iodine, O-tosylate, O-triflate, O-mesylate etc.

However, it is also possible initially to prepare an amide, as described above, by reacting the diamine IV with a carboxylic acid. In a subsequent step the group B --C(O)-- or --C(O)--CH₂ -- of the amide can then be reduced to a group B --CHR¹² -- wherein R¹² equals H or --CH₂ --CH₂ --. The methods known from the literature for reducing amides may be used for this step, such as catalytic hydrogenation or reduction with lithium aluminium hydride, with sodium borohydride in the presence of cobalt chloride or acetic acid or trifluoroacetic acid or with borane or borane-tetrahydrofuran complex or borane/dimethylsulfide complex. Preferably, catalytic hydrogenation is carried out or sodium borohydride is used with trifluoroacetic acid or borane/dimethylsulfide complex in tetrahydrofuran or dioxane.

The reaction with the above-mentioned boron reagents is carried out at temperatures ranging from -10° C. to about 100° C., preferably at the boiling temperature of the solvent.

Preferably, the diamine IV in step c) may also be reacted with a corresponding carbonile compound ##STR15## wherein B' is ═C(R12)-- or ═CH--CH₂ --, according to methods known from the literature, to obtain an imine which can be reduced to V. The imine is preferably prepared in inert solvents such as benzene, toluene or xylene (or other solvents suitable for the azeotropic removal of the water) using a water separator; or in methylene chloride, tetrahydrofuran, dioxane or tert.butyl-methylether in the presence of a water binding agent such as molecular sieves and the like, or else in alcohols. The imine may be reduced using reducing agents such as sodium borohydride, sodium cyanoborohyride, lithium aluminium hydride, zinc and hydrochloric acid, formic acid and hydrogen in the presence of metal catalysts.

Preferably, IV in step c) is reacted directly with the above-mentioned carbonyl compound in a reductive amination to obtain V. Sodium borohydride, sodium cyanoborohydride, lithium aluminium hydride, zinc and hydrochloric acid, formic acid and hydrogen in the presence of metal catalysts are suitable reducing agents. The reducing agent preferably used is sodiumcyanoborohydride in a solvent such as methanol, ethanol or isopropanol. The pH of the reaction mixture is preferably adjusted to a level of 7-8 using ethereal or ethanolic hydrochloric acid. The reaction temperature is selected between -10° C. and 40° C. and preferably the work is done at room temperature.

The remarks made above for step c) also apply to the insertion of group R² in step d).

EXAMPLE 1 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-4-phenylpiperazine-1-yl)-ethyl!-amine

a) (2-Methoxyphenyl)-(4-phenylpiperazine-1-yl)-acetonitrile

6.5 g (40 mmol) of 1-phenylpiperazine are dissolved in 40 ml of 1N-hydrochloric acid and mixed with a solution of 5.4 g (40 mmol) of 2-methoxybenzaldehyde in 60 ml of ether. The mixture is cooled to 0° C., a solution of 2.5 g (40 mmol) potassium cyanide in 30 ml of water is slowly added dropwise, with stirring, and the mixture is stirred overnight at ambient temperature. Then the organic phase is separated off (any product already precipitated is removed by suction filtration beforehand). The aqueous phase is washed three times with 50 ml of ether, the organic phases are combined and dried over sodium sulfate. The solvent is eliminated in vacuo and the residue is stirred with cyclohexane and suction filtered. 9.3 g of (2-Methoxyphenyl)-(4-phenylpiperazine-1-yl)-acetonitrile are obtained (76% yield) as an almost colourless solid.

b) 2-(2-Methoxyphenyl)-(4-phenylpiperazine-1-yl)-ethylamine

2.3 g (60 mmol) of Lithium aluminium hydride are suspended in 100 ml of ether under a nitrogen atmosphere and cooled to about -10° C. 1.6 ml (30 mmol) of conc. sulphuric acid are carefully added dropwise thereto, with further cooling, and the resulting mixture is stirred for 1.5 hours at about -5° C. Then a solution of 9.2 g (30 mmol) of (2-methoxyphenyl)-(4-phenylpiperazine-1-yl)-acetonitrile in 50 ml of tetrahydrofuran is slowly added dropwise. The mixture is allowed to come up to ambient temperature and is then refluxed for about 10 minutes. It is then allowed to cool and stirred overnight at ambient temperature. A mixture of 8 ml of tetrahydrofuran and 8 ml of water is then added, initially very carefully, to the grey suspension, whilst cooling with ice, and then 165 ml of 2N hydrochloric acid are added. The reaction mixture is then washed twice with 70 ml of ether and the ethereal phases are discarded. 18.2 g of Seignette salt and 45 ml of conc. sodium hydroxide solution are then added. The mixture is extracted four times with 70 ml of ether, the combined organic phases are dried over sodium sulfate and the solvent is eliminated in vacuo. 8.6 g of 2-(2-methoxyphenyl)-(4-phenylpiperazine-1-yl)-ethylamine are obtained (92% yield) as a yellowish oil. There is no additional purification before the further reactions.

c) 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-phenylpiperazine-1-yl)-ethyl!-amine

625 mg (2 mmol) of 2-(2-methoxyphenyl)-(4-phenylpiperazine-1-yl)-ethylamine are dissolved in 10 ml of methanol and mixed with 346 ml (2.1 mmol) of 3,5-bistrifluoromethylbenzaldehyde. 190 mg (3 mmol) of sodium cyanoborohydride are added whilst cooling with ice and the mixture is then stirred for about 30 minutes more at 0° C., then overnight at ambient temperature. Is then made slightly acidic with 2N hydrochloric acid, whilst cooling with ice, and the reaction mixture is evaporated down in vacuo. 70 ml of water are added, the mixture is made alkaline with 2N sodium hydroxide solution (pH about 9) and extracted with ether (3×50 ml). The combined organic phases are dried over sodium sulfate and the solvent is eliminated in vacuo. The residue is chromatographed with ethyl acetate and methanol 7:3 over silica gel. The fractions which are uniform according to TLC are combined and freed from solvent in vacuo. The residue is taken up in about 2 ml of isopropanol and the 3,5-bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-phenylpiperazine-1-yl)-ethyl!-amine is precipitated therefrom in the form of the hydrochloride using ethereal hydrochloric acid and diisopropyl ether. The hydrochloride is suction filtered, washed with diisopropyl ether and dried at about 50° C. in vacuo. 950 mg of the substance are obtained in the form of a colourless solid (yield 73%).

Examples 2 to 57 are prepared analogously.

EXAMPLE 2 N-3,5-Bistrifluoromethylbenzyl-N- 2-(2-methoxyphenyl)-2-(4-phenylpiperazine-1-yl)-ethyl!-acetamide

162 mg (0.25 mmol) of 3,5-bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-phenylpiperazine-1-yl)-ethyl!-amine (for preparation see Example 1) are dissolved in 10 ml of THF and mixed with 175 ml of triethylamine (1.25 mmol). 21 ml (0.3 mmol) of acetylchloride are added dropwise thereto, whilst coolling with ice, the mixture is heated to ambient temperature and then refluxed for about 2 hours. The reaction mixture is then evaporated down in vacuo, stirred with 40 ml of water and extracted with 3×20 ml of ethyl acetate. The organic phases are combined, evaporated down and the residue is chromatographed over silica gel with ethyl acetate/cyclohexane/methanol 60:30:5. The fractions which are uniform according to TLC are combined and freed from solvents in vacuo. The residue is dissolved in a little isopropanol and the N-3,5-bistrifluoromethylbenzyl-N- 2-(2-methoxyphenyl)-2-(4-phenylpiperazine-1-yl)-ethyl!-acetamide is precipitated therefrom in the form of the hydrochloride using ethereal hydrochloric acid and diisopropyl ether. The substance is suction filtered, washed with diisopropyl ether and dried in vacuo at about 50° C. 110 mg of the hydrochloride are obtained in the form of a light beige solid (yield 67%).

MS: (M+H)⁺ =580.2 (Base)

EXAMPLE 3 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-phenyliperazine-1-yl)-ethyl!-amine EXAMPLE 4 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(2,6-dimethylphenyl)piperazine-1-yl)-ethyl!-amine EXAMPLE 5 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(2-hydroxyphenyl)piperazine-1-yl)-ethyl!-amine EXAMPLE 6 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(2-methoxyphenyl)piperazine-1-yl)-ethyl!-amine EXAMPLE 7 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(3-methoxyphenyl)piperazine-1-yl)-ethyl!-amine EXAMPLE 8 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(4-methoxyphenyl)piperazine-1-yl)-ethyl!-amine EXAMPLE 9 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(2,4-dimethoxyphenyl)piperazine-1-yl)-ethyl!-amine

The preparation is analogous to Example 1 but the amino nitrile is reduced as follows:

3.1 g (9 mmol) of phenyl-(4-(2,4-dimethoxyphenyl)piperazine-1-yl)-ethyl!-acetonitrile are dissolved in 35 ml of THF and 35 ml of methanol and combined with 5 g of ammonia and about 5 g of Raney-Nickel (methanol-moist). Reduction is carried out at 60° C. under 5 bar with hydrogen. The catalyst is then removed by filtration over activated charcoal and kieselgur and the solvent is distilled off under reduced pressure. The residue is taken up with a little methylene chloride and a hydrochloride is precipitated therefrom with ethereal hydrochloric acid. The precipitate is suction filtered, the substance is dissolved in a little chloroform/methanol 3:1 and chromatographed with chloroform/methanol/conc. ammonia solution 180:10:1. The fractions which are uniform according to TLC are combined and freed from solvent in vacuo. The residue is taken up in a little methylene chloride and 3,5-bistrifluoromethylbenzyl- 2-phenyl-2-(4-(2,4-dimethoxyphenyl)-piperazine-1-yl)-ethyl!-amine is precipitated therefrom in the form of the hydrochloride using ethereal hydrochloric acid. 1 g of the substance is obtained as a light brown solid (yield 25%).

EXAMPLE 10 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(3,5-dimethoxyphenyl)-piperazine-1yl)-ethyl!-amine EXAMPLE 11 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(2-(methylthio)phenyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 12 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(2-fluorophenyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 13 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(4-fluorophenyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 14 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(4-trifluoromethylphenyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 15 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(4-nitrophenyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 16 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(4-chlorobenzyl-piperazine-1-yl)-ethyl!-amine EXAMPLE 17 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(3,4-methylenedioxybenzyl)-piperazine-1-yl)-ethyl!-amine

Prepared analogously to Example 9.

EXAMPLE 18 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(9-fluorenyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 19 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-(2-methylphenyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 20 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-(2,3-dimethylphenyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 21 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-(2-chlorophenyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 22 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-benzylpiperazine-1-yl)-ethyl!-amine EXAMPLE 23 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(1-phenylethyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 24 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-benzhydrylpiperazine-1-yl)-ethyl!-amine EXAMPLE 25 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(2-phenylethyl-piperazine-1-yl)-ethyl!-amine EXAMPLE 26 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxypyenyl)-2-(4-(2-phenylethyl)-piperazine-1-yl)-ethyl!-amine

FAB-MS: (M+H)⁺ =566

EXAMPLE 27 3,5-Bistrifluoromethylbenzly- 2(2-methoxyphenyl)-2-(4-(3,4-methylenedioxybenzyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 28 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-(2-pyridyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 29 3,5-Bistrifluoromethylbenzyl 2-methoxyphenyl)-2-(4-(2-quinolinyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 30 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-methylperazine-1-yl)-ethyl!-amine EXAMPLE 31 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-methylpiperazine-1-yl)-ethyl!-amine EXAMPLE 32 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-(1-propyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 33 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-allylpiperazine-1-yl)-ethyl!-amine EXAMPLE 34 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-(2-propyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 35 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-cyclopentylpiperazine-1-yl)-ethyl!-amine EXAMPLE 36 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-cyclohexyl-piperazine-1-yl)-ethyl!-amine EXAMPLE 37 2-Methoxybenzyl- 2-phenyl-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 38 2-Chlorobenzyl- 2-phenyl-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 39 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 40 1-(3,4-Dichlorophenyl)-2'-(2-methoxyphenyl)-2'-(4-cyclohexylpiperazine-1-yl)-diethylamine EXAMPLE 41 3,5-Bistrifluoromethylbenzyl- 2-(3-methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 42 3,5-Bistrifluoromethylbenzyl- 2-(4-methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 43 3,5-Bistrifluoromethylbenzyl- 2-(3,4,5-trimethoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 44 3,5-Bistrifluoromethylbenzyl- 2-(4-methylphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 45 3,5-Bistrifluoromethylbenzyl- 3-phenyl-2-(4-cyclohexylpiperazine-1-yl)-propyl!-amine EXAMPLE 46 3,5-Bistrifluoromethylbenzyl- 3,3-diphenyl-2-(4-cyclohexylpiperazine-1-yl)-propyl!-amine EXAMPLE 47 3,5-Bistrifluoromethylbenzyl- 2-(2-naphthyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 48 3,5-Bistrifluoromethylbenzyl- 2-(4-chlorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 49 3,5-Bistrifluoromethylbenzyl- 2-(3,4-dichlorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 50 3,5-Bistrifluoromethylbenzyl- 2-(4-fluorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl !-amine EXAMPLE 51 3,5-Bistrifluoromethylbenzyl- 2-(2-trifluoromethylphenyl-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 52 3,5-Bistrifluoromethylbenzyl- 2-(3,5-bistrifluoromethylphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 53 3,5-Bistrifluoromethylbenzly- 2(2-methoxyphenyl)-2-(4-cycloheptylpiperazine-1-yl)-ethyl!-amine EXAMPLE 54 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-(2-cyclohexylethyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 55 3,5-Bistrifluoromethylbenzyl 2-methoxyphenyl)-2-(4-(2-indanyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 56 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2(4-(1,2,3,4-tetrahydronaphth-2-yl-ethyl!-amine EXAMPLE 57 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-(2-hydroxyethyl)-piperazine-1-yl)-ethyl!-amine EXAMPLE 58 N- 2-(2-Methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl-ethyl!-3,5-bistrifluoromethylbenzamide

317 mg (1 mmol) of 2-Methoxyphenyl-2-(4-cyclohexylpiperazine-1 -yl)-ethylamine (prepared as described in Example 1) are combined with 272 mg (1 mmol) of 3,5-bistrifluoromethylbenzoic acid in 30 ml of DMF. The mixture is cooled to about 3° C. and combined with 501 ml (3.3 mmol) of diethylphosphorylcyanide and 1.4 ml triethylamine. After about 1 hour the ice bath is removed and the mixture is stirred overnight at ambient temperature. It is evaporated down in vacuo and the residue is stirred with a little water and 20% sodium hydrogen carbonate solution. It is suction filtered and washed thoroughly with water. The crude product is chromatographed over silica gel with ethyl acetate/methanol 1:1. The fractions which are uniform according to TLC are combined and freed from solvent in vacuo. The residue is dissolved in a little isopropanol and the N- 2-(2-methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-3,5-bistrifluoromethyl-benzamide is precipitated therefrom in the form of the hydrochloride using ethereal hydrochloric acid and diisopropylether. The product is suction filtered, washed with diisopropylether and dried in vacuo at about 50° C. 200 mg of the substance are obtained as a slightly beige solid (yield 32%).

EXAMPLE 59 N- 2-(2-Methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-phenylacetamide

Prepared analogously to Example 58.

EXAMPLE 60 N- 2-(2-Methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(4-methoxyphenyl)-acetamide

Prepared analogously to Example 58.

EXAMPLE 61 N- 2-(2-Methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(4-chlorophenyl)-acetamide

Prepared analogously to Example 58.

EXAMPLE 62 N- 2-(2-Methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,4-dichlorophenyl)-acetamide

Prepared analogously to Example 58.

EXAMPLE 63 N- 2-(3,4-dichlorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2- 3-(2-propyloxy)-phenyl!-acetamide

Prepared analogously to Example 58.

EXAMPLE 64 N- 2-(2-Methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(2-trifluoromethylphenyl)-acetamide

Prepared analogously to Example 58.

EXAMPLE 65 N- 2-(2-Methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)-acetamide

Prepared analogously to Example 58.

EXAMPLE 66 2-(3,5-Bistrifluoromethylphenyl)-2'-(2-methoxyphenyl)-2'-(4-cyclohexylpiperazine-1-yl)-diethylamine

220 mg (0.4 mmol) of N- 2-(2-methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl-acetamide (prepared as in Example 65) are combined with 150 mg (4 mmol) of sodium borohydride in 2 ml of dioxane. The mixture is cooled to about 10° C. and a solution of 460 ml (6 mmol) of trifluoroacetic acid in 1 ml of dioxane is slowly added dropwise thereto. The mixture is then refluxed for 3 hours, cooled again, mixed with 20 ml of water and made alkaline with sodium carbonate. It is extracted with 3×50 ml of ether, the ethereal extract is evaporated down and the residue is chromatographed over silica gel with ethyl acetate/methanol 1:1. The fractions which are uniform according to TLC are combined and freed from solvent in vacuo. The residue is dissolved in a little isopropanol and the 2-(3,5-bistrifluoromethylphenyl-2'-(2-methoxyphenyl)-2'-(4-cyclohexylpiperazine-1-yl)-diethylamine is precipitated therefrom in the form of the hydrochloride using ethereal hydrochloric acid and diisopropylether. The product is suction filetered, washed with diisopropylether and dried at about 50° C. in vacuo. 75 mg of the substance are obtained as a slightly beige solid (yield 28%).

EXAMPLE 67 N- 2-(2-Methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-3,5-bistrifluoromethylbenzamide

Prepared analogously to Example 66.

EXAMPLE 68 N- 2-(2-Methoxyphenyl)-2-(4-cycloheptylpiperazine-1-yl)-ethyl!-2-(3,5-bistrifluoromethyl-phenyl)-acetamide

Prepared analogously to Example 58.

EXAMPLE 69 2-(3,5-Bistrifluoromethylphenyl)-2'-(2-methoxyphenyl)-2'-(4-cycloheptylpiperazine-1-yl)-diethylamine

Prepared analogously to Example 66.

EXAMPLE 70 N- 2-(3,4-dichlorophenyl)-2-(4-(2-phenylethyl)-piperazine-1-yl)-ethyl!-2- 3-(2-propyloxy)-phenyl!-acetamide

Prepared analogously to Example 58.

EXAMPLE 71 N- 2-(2-Methoxyphenyl)2-(4-(2-indanyl)piperazine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)-acetamide

Prepared analogously to Example 58.

EXAMPLE 72 N- 2-(2-Methoxyphenyl)-2-(4-(1,2,3,4-tetrahydronaphth-2-ly)piperazine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)-acetamide

Prepared analogously to Example 58.

EXAMPLE 73 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-cyclohexylhomopiperazine-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 74 N- 2-(2-Methoxyphenyl)-2-(4-cyclohexvlhomopiperazine-1-yl)-ethyl!-2-(3,5-bistrifluoromethyl-phenyl)-acetamide

Prepared analogously to Example 58.

EXAMPLE 75 N- 2-(2-Methoxyphenyl)-2-piperidin-1-yl-ethyl!-3,5-bistrifluoromethylbenzamide

Prepared analogously to Example 58.

EXAMPLE 76 N- 2-(2-Methoxyphenyl)-2-piperidin-1-yl-ethyl!-2-phenylacetamide

Prepared analogously to Example 58.

EXAMPLE 77 2-Phenyl-2'-(2-methoxyphenyl)-2'-piperidin-1-yl-diethylamine

1.2 g (3.4 mmol) of N- 2-(2-methoxyphenyl)-2-piperidin-1-yl-ethyl!-2-phenylacetamide (prepared as in Example 76) are combined, in 20 ml of THF, with 0.5 ml (5.1 mmol) of borane-dimethylsulfide complex in THF. The mixture is stirred for about 15 minutes at ambient temperature and then refluxed for about 5 hours. The reaction mixture is then cooled with an ice bath and about 10 ml of methanol are carefully added. It is evaporated down, the residue is combined with 50 ml of water and 20 ml of 20% sodium hydrogen carbonate solution and extracted with 3×50 ml of ether. The ether extract is dried over sodium sulfate and solvent is eliminated in vacuo. The crude product is chromatographed over silica gel using ether acetate/methanol 1:1. The fractions which are uniform according to TLC are combined and freed from solvent in vacuo. 620 mg of 2-phenyl-2'-(2-methoxyphenyl)-2'-piperidin-1-yl-diethylamine are obtained (yield 54%).

EXAMPLE 78 N- 2-(2-Methoxyphenyl)-2-piperidin-1-yl-ethyl!-2-(3,5-bistrifluoromethylphenyl)acetamide

Prepared analogously to Example 58.

EXAMPLE 79 2-(3,5-Bistrifluoromethylphenyl)-2'-(2-methoxyphenyl)-2'-piperidine-1-yl-diethylamine

Prepared analogously to Example 77 from N- 2-(2-Methoxyphenyl)-2-piperidin-1-yl-ethyl!-2-(3,5-bistrifluoromethylphenyl)acetamide (for preparation see Example 78).

EXAMPLE 80 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(2-methylpiperidine-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 81 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(3-methylpiperidine-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 82 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-methylpiperidine-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 83 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(3,5-dimethylpiperidine-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 84 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-hydroxypiperidine-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 85 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(3-phenylpiperidine-1-yl)-ethyl!-amine

Prepared analogously to Example 1. The hydrochloride is not precipitated but instead the crude base is chromatographed.

0.8 g of the crude base are chromatographed over 100 g of silica gel, initially with 300 ml of cyclohexane/ethyl acetate 7:3 and then with 300 ml of ethyl acetate/cyclohexane/methanol 60:35:5. The fractions which are uniform according to TLC are combined and a first fraction (0.15 g of yellow oil) is obtained having a low retention time, a third fraction 0.15 g of yellow oil having a higher retention time and a second, intermediate fraction 0.28 g of yellow oil which is a mixture of the substances contained in fractions 1 and 3. Fraction 1 is dissolved in 5 ml of acetone and 3,5-bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(3-phenylpiperidine-1-yl)-ethyl!-amine is precipitated therefrom in the form of the hydrochloride using ethereal hydrochloric acid and diisopropylether. 0.12 g of the substance are obtained as a creamy coloured solid (yield 10%).

EXAMPLE 86 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(3-phenylpiperidine-1-yl)-ethyl1!-amine Diastereomers from Example 85

The same procedure is used as for Example 85 and Fraction 3 is converted into the hydrochloride. 90 mg of creamy coloured solid are obtained (yield 7%).

EXAMPLE 87 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-phenylpiperidine-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 88 5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-benzylpiperidine-1-yl)-ethyl)-amine

Prepared analogously to Example 1.

EXAMPLE 89 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-cyclohexylpiperidine-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 90 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(3-hydroxypiperidine-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 91 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-piperidin-1-yl)-piperidin-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 92 N- 2-(2-Methoxyphenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-3,5-bistrifluoromethyl-benzamide

Prepared analogously to Example 58.

EXAMPLE 93 N- 2-(2-Methoxyphenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluoromethyl-phenyl)-acetamide

Prepared analogously to Example 58.

EXAMPLE 94 N-2(3,4-Dichlorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)-acetamide

Prepared analogously to Example 58.

EXAMPLE 95 3,5-Bistrifluoromethylbenzyl-(2-(3,4-dichlorophenyl)-2-(4-(piperidine-1-yl)-piperidine-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 96 3,5-Bistrifluoromethylbenzyl-(2-phenyl-2morpholine-4yl-ethyl)-amine

Prepared analogously to Example 1.

EXAMPLE 97 3,5-Bistrifluoromethylbenzyl-(2-(2-methoxyphenyl)-2(4-(3-indolyl)-piperidine-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 98 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-(2-isoindolinyl)-piperidine-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 99 N- 2-(2-Methoxyphenyl)-2-(4-(2-isoindolinyl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluoromethyl-phenyl)-acetamide

Prepared analogously to Example 58.

EXAMPLE 100 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-(1,2,3,4-tetrahydroisoquinoline-2-yl)piperidine-1-yl)-ethyl!-amine

Prepared analogously to Example 1.

EXAMPLE 101 N- 2-(2-Methoxyphenyl)-2-(4-(1,2,3,4-tetrahydroisoquinoline-2-yl)-piperidine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)-acetamide

Prepared analogously to Example 58.

EXAMPLE 102 N-Phenyl-N'- 2-phenyl-2-(4-methylpiperazine-1-yl)-ethyl!-urea

2-Phenyl-2-(4-methylpiperazine-1-yl)ethylamine is prepared analogously to Example 1.

482 mg (2.2 mmol) of 2-phenyl-2-(4-methylpiperazine-1-yl)ethylamine are dissolved in 10 ml of methylene chloride and mixed with 217 ml (2 mmol) of phenylisocyanate at about -5° C. The mixture is stirred for 2 hours at ambient temperature and the solvent is then eliminated in vacuo. The residue is stirred with petroleum ether (boiling temperature ranging from 40°-80° C.), the precipitate is suction filtered and dried in vacuo at 50° C. 490 mg N-phenyl-N'- 2-phenyl-2-(4-methylpiperazine-1-yl-ethyl!-urea are obtained as a beige solid (yield 73%).

Examples 103-180 are prepared analogously.

EXAMPLE 103 N-2-Methoxyphenyl-N'- 2-phenyl-2-(4-methylpiperazin-1-yl)-ethyl!-urea EXAMPLE 104 N-2-Chlorophenyl-N'- 2-phenyl-2-(4-methylpiperazine-1-yl)-ethyl!-urea EXAMPLE 105 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-methylpiperazine-1-yl)-ethyl!-urea EXAMPLE 106 N-Phenyl-N'- 2-(2-methoxyphenyl)-2-(4-methylpiperazine-1-yl)-ethyl)-urea Example 107 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-methylpiperazin-1-yl)-ethyl!-urea EXAMPLE 108 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-(1-propyl)piperazine-1-yl)-ethyl!-urea EXAMPLE 109 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-allylpiperazine-1-yl)-ethyl!-urea EXAMPLE 110 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-(2-propyl)piperazin-1-yl)-ethyl!-urea EXAMPLE 111 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-cyclopentylpiperazine-1-yl)-ethyl!-urea EXAMPLE 112 N-Phenyl-N'- 2-phenyl-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-urea EXAMPLE 113 N-2-Chlorophenyl-N'- 2-phenyl-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-urea EXAMPLE 114 N-2-Methoxyphenyl-N'- 2-phenyl-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-urea EXAMPLE 115 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-cyclohexylpiperazine-1-y1)-ethyl!-urea EXAMPLE 116 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-urea EXAMPLE 117 N-3,5-Bistrifluoromethylphenyl-N'- 2-(3,4-dichlorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-urea EXAMPLE 118 N-3,5-Bistrifluoromethylphenyl-N'- 3-phenyl-2-(4-cyclohexylpiperazine-1-yl)-prop-1-yl!-urea EXAMPLE 119 N-3,5-Bistrifluoromethylphenyl-N'- 3,3-diphenyl-2-(4-cyclohexylpiperazine-1-yl)-prop-1-yl!-urea EXAMPLE 120 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-cycloheptylpiperazine-1-yl)-ethyl!-urea EXAMPLE 121 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-(2-cyclohexylethyl)piperazine-1-yl)-ethyl!-urea EXAMPLE 122 N-Phenyl-N'- 2-phenyl-2-(4-phenylpiperazine-1-yl)-ethyl)-urea EXAMPLE 123 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-phenylpiperazine-1-yl)-ethyl!-urea EXAMPLE 124 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(2,6-dimethylphenyl)piperazine-1-yl)-ethyl!-urea EXAMPLE 125 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(2-hydroxyphenyl)piperazine-1-yl)-ethyl!-urea EXAMPLE 126 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(2-methoxyphenyl)piperazine-1-yl-ethyl)-urea EXAMPLE 127 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(3-methoxyphenyl)piperazine-1-yl)-ethyl!-urea EXAMPLE 128 N-3,5-Bistrifluoromethylphenyl-N' -2-phenyl-2-(4-(4-methoxyphenyl)-piperazine-1-yl)-ethyl!-urea EXAMPLE 129 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(2,4-dimethoxyphenyl)-piperazine-1-yl)-ethyl!-urea

The bistrifluoromethylbenzyl- 2-phenyl-2-(4-(2,4-dimethoxyphenyl)piperazine-1-yl)-ethyl!amine is prepared as in Example 9. Further reaction is carried out analogously to Example 102.

EXAMPLE 130 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(3,5-dimethoxyphenyl)-piperazine-1-yl)-ethyl!-urea EXAMPLE 131 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(2-methylthio)phenyl)piperazine-1-yl)-ethyl)-urea EXAMPLE 132 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(2-fluorophenyl)-piperazine-1-yl)-ethyl!-urea EXAMPLE 133 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(4-fluorophenyl)-piperazine-1-yl)-ethyl!-urea EXAMPLE 134 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(4-trifluoromethylphenyl)-piperazine-1-yl)-ethyl!-urea EXAMPLE 135 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(4-nitrophenyl)-piperazine-1-yl)-ethyl!-urea EXAMPLE 136 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(4-chlorobenzyl)-piperazine-1-yl)-ethyl!-urea EXAMPLE 137 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(3,4-mehylenedioxybenzyl)piperazine-1-yl)-ethyl!-urea

The 3,5-bistrifluoromethylbenzyl- 2-phenyl-2-(4-(3,4-methylenedioxybenzyl)-piperazine-1-yl)-ethyl!amine is prepared as in Example 9. Further reaction is carried out analogously to Example 102.

EXAMPLE 138 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(9-fluorenyl)piperazine-1-yl)-ethyl!-urea EXAMPLE 139 N-Phenyl-N'- 2-2-methoxyphenyl)-2-(4-phenylpiperazine-1-yl)-ethyl)-urea EXAMPLE 140 N-2-Chlorophenyl-N'- 2-2-methoxyphenyl-2-4-(phenylpiperazine-1-yl)-ethyl!-urea EXAMPLE 141 N-2-Methoxyphenyl-N'- 2-2-methoxyphenyl)-2-(4-phenylpiperazine-1-yl)-ethyl!-urea EXAMPLE 142 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-phenylpiperazine-1-yl)-ethyl)!-urea EXAMPLE 143 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-2-methylphenyl)-piperazine-1-yl)-ethyl!-urea EXAMPLE 144 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl-2-(4-(2,3-dimethylphenyl)piperazine-1-yl)-ethyl!-urea EXAMPLE 145 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl-2-(4-(2-chlorophenylipiperazine-1-yl)-ethyl!-urea EXAMPLE 146 N-3,.5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4benzyl)piperazine-1-yl)-ethyl!-urea EXAMPLE 147 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl-2-(4-benzylpiperazine-1-yl)-ethyl!-urea EXAMPLE 148 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(3,4-methylenedioxybenzyl-piperazine-1-yl)-ethyl!-urea EXAMPLE 149 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(2-phenylethyl)-piperazine-1-yl)-ethyl!-urea EXAMPLE 150 N-3,5-Bistrifluoromethyl-phenyl-N'- 2-(2-methoxyphenyl-2-(4-2-phenylethyl)-piperazine-1-yl)-ethyl!-urea EXAMPLE 151 N-3,5-Bistrifluoromethylphenyl-N'- 2-2-methoxyphenyl)-2-(4-(1-phenylethyl)-piperazine-1-yl)-ethyl!-urea EXAMPLE 152 N-Phenyl-N'- 2-(2-methoxyphenyl)-2-(4-benzhydrylpiperazine-1-yl)-ethyl!-ure EXAMPLE 153 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2- 4-2-indanyl)piperazine-1-yl-ethyl!-urea EXAMPLE 154 N-3,5-Bistrifluoromethylphenyl-N' -2-(2-methoxyphenyl-2-(4-1,2,3,-tetrahydronaphth-2-yl)piperazine-1-yl-ethyl!-urea EXAMPLE 155 N-3,5-Bistrifluoromethylphenyl-N' -2-(2-methoxyphenyl)-2-(4-benzhydrylpiperazine-1-yl-ethyl!-urea EXAMPLE 156 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-(2-pyridyl)piperazine-1-yl-ethyl!-urea EXAMPLE 157 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-(2-pyrimidyl)piperazine-1-yl)-ethyl!-urea EXAMPLE 158 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-(2-quinolinyl)piperazine-1-yl)-ethyl!-urea EXAMPLE 159 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-cyclohexylhomopiperazine-1-yl)-ethyl)-urea EXAMPLE 160 N-Phenyl-N'- 2-(2-methoxyphenyl!-2-(piperidin-1-yl)-ethyl!-urea EXAMPLE 161 N-2,5-Dimethylphenyl-N'- 2-(2-methoxyphenyl-2-piperidin-1-yl)-ethyl!-urea EXAMPLE 162 N-2-Methylphenyl-N'- 2-(2-methoxyphenyl)-2-(piperidin-1-yl)-ethyl!-urea EXAMPLE 163 N-2-Chlorophenyl-N'- 2-(2-methoxyphenyl)-2-(piperidin-1-yl)-ethyl!-urea EXAMPLE 164 N-3,4-Dichlorophenyl-N'- 2-(2-methoxyphenyl)-2-(piperidin-1-yl)-ethyl!-urea EXAMPLE 165 N-2-Methoxyphenyl-N'- 2-(2-methoxyphenyl)-2-(piperidin-1-yl)ethyl!-urea EXAMPLE 166 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-piperidin-1-yl)-ethyl!-urea EXAMPLE 167 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(piperidin-1-yl-ethyl!-urea EXAMPLE 168 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(2-methylpiperidin-1-yl-ethyl!-urea EXAMPLE 169 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2(3-methylpiperidin-1-yl-ethyl!-urea EXAMPLE 170 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-methylpiperidin-1-yl-ethyl!-urea EXAMPLE 171 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-cyclohexylpiperidin-1-yl)-ethyl!-urea EXAMPLE 172 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-5,dimethylpiperidin-1-yl)-ethyl!-urea EXAMPLE 173 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(3-phenylpiperidin-1-yl)-ethyl!-urea EXAMPLE 174 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-phenylpiperidin-1-yl)-ethyl!-urea EXAMPLE 175 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-benzylpiperidin-1-yl)-ethyl!-urea EXAMPLE 176 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(nortropan-8-yl)-ethyl!-urea EXAMPLE 177 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-piperidin-1-yl)-piperidin-1-yl-ethyl!-urea EXAMPLE 178 N-3,5-Bistrifluoromethylphenyl-N'- 2-4-dichlorophenyl)-2-(4-piperidin-1-yl)-piperidin-1-yl-ethyl!-urea EXAMPLE 179 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl-2-(4-(2-isoindolinyl)-piperidin-1-yl)-ethyl!-urea EXAMPLE 180 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-(1,2,3,4-tetrahydroisoquinolin-2-yl)-piperidin-1-yl)-ethyl!-urea

The following Examples may also be prepared analogously to the processes described hereinafter:

EXAMPLE 181 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl2-(4-(2-(4-chlorophenyl)ethyl)piperazine-1-yl)ethyl!-urea EXAMPLE 182 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(2-(4-chlorophenyl)ethyl)piperazine-1-y1)ethyl!-amine EXAMPLE 183 N-3,5-Bistrifluoromethylphenyl-N'- 2-phenyl-2-(4-(2-(4-methoxyphenyl)ethyl)piperazine-1-yl)ethyl!-urea EXAMPLE 184 3,5-Bistrifluoromethylbenzyl- 2-phenyl-2-(4-(2-(4-methoxyphenyl)ethyl)piperazine-1-yl)ethyl!-amine EXAMPLE 185 N- 2-Phenyl-2-(4-(2-cyclopropylethyl)piperazine-1-yl)ethyl!-2-(3,5-bistrifluoromethyl-phenyl)-acetamide EXAMPLE 186 N- 2-Phenyl-2-(4-(2-phenylpropyl)piperazine-1-yl)ethyl!-2-(3,5-bistrifluoromethyl-phenyl)-acetamide EXAMPLE 187 N- 2-Phenyl-2-(4-ethylpiperazine-1-yl)ethyl!-2-(3,5-bistrifluoromethylphenyl)-acetamide EXAMPLE 188 N- 2-Thien-3-yl-2-(4-cyclohexylpiperazine-1-yl)ethyl!-2-(3,5-bistrifluoromethylphenyl)-acetamide EXAMPLE 189 N- 2-Thien-2-yl-2-(4-cyclohexylpiperazine-1-yl)ethyl!-2-(3,5-bistrifluoromethylphenyl)-acetamide EXAMPLE 190 N- 2-Phenyl-2-(4-(2-(3,4-dichlorophenyl)ethyl)piperazine-1-yl)ethyl!-2-(3,5-bistrifluoro-methylphenyl)-acetamide EXAMPLE 191 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(3-hydroxymethylpiperidine-1-yl)-ethyl!-amine EXAMPLE 192 3,5-Bistrifluoromethylbenzyl- 2-(2-methoxyphenyl)-2-(4-(2-hydroxyethyl)piperidine-1-yl)-ethyl!-amine EXAMPLE 193 3,5-Bistrifluoromethylbenzyl- 2-(1-naphthyl)-2-(4-cyclohexylpiperidine-1-yl)-ethyl!-amine EXAMPLE 194 N- 2-(2-Methoxyphenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3-(2-propyloxy)phenyl)acetamide EXAMPLE 195 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2-methoxyphenyl)-2-(4-propylpiperidine-1-yl)-ethyl!-urea EXAMPLE 196 N- 2-(3,4-Dichlorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3-(2-propyloxy)phenyl)acetamide EXAMPLE 197 1-(3,5-Bistrifluoromethylphenyl)-2'-(2-methoxyphenyl)-2'-(4-cyclohexylpiperazine-1-yl)-diethylamine EXAMPLE 198 N- 2-(3,4-Dichlorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-bistrifluoro-methylphenyl)acetamide EXAMPLE 199 N- 2-(2-Methoxyphenyl-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3-(2-propyloxy)phenyl)acetamide EXAMPLE 200 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2,6-dichlorophenyl)-2-(4-cyclohexylpiperazine-1-yl)ethyl!-urea EXAMPLE 201 N- 2-(2,6-Dichlorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-bistrifluormethylphenyl)acetamide EXAMPLE 202 3,5-Bistrifluoromethylbenzyl- 2-(2,6-dichlorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 203 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2,3-dichlorophenyl)-2-(4-cyclohexylpiperazine-1-yl)ethyl!-urea EXAMPLE 204 3,5-Bistrifluoromethylbenzyl- 2-(2,3-dichlorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-amine EXAMPLE 205 N- 2-(2,3-Dichlorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-bistrifluormethylphenyl)acetamide EXAMPLE 206 1-(3,5-Bistrifluoromethylphenyl)-2'-(3,4-dichlorophenyl)-2'-(4-(piperidine-1-yl)piperidine-1-yl)-diethylamine EXAMPLE 207 1-(3,5-Bistrifluoromethylphenyl)-2'-(3,4-dichlorophenyl)-2'-(4-(piperidine-1-yl)piperidine-1-yl)-diethylamine Diastereomers of Example 211 EXAMPLE 208 N-3,5-Bistrifluoromethylphenyl)-N'- 2-(1-naphthyl)-2-(4-cyclohexylpiperazine-1-yl)ethyl!-urea EXAMPLE 209 N- 2-(1-Naphthyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)acetamide EXAMPLE 210 1-(3,5-Bistrifluoromethylphenyl)-2'-(2,3-dichlorophenyl)-2'-(4-Cyclohexylpiperazine-1-yl)-diethylamine EXAMPLE 211 1-(3,5-Bistrifluoromethylphenyl)-2'-(2,3-dichlorophenyl)-2'-(4-cyclohexylpiperazine-1-yl)-diethylamine Diastereomers of Example 215 EXAMPLE 212 1-(3,5-Bistrifluoromethylphenyl)-2'-(2,6-dichlorophenyl)-2'-(4-cyclohexylpiperazine-1-yl)-diethylamine EXAMPLE 213 N- 2-(3,4-Dichlorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-dimethyl-phenyl)acetamide EXAMPLE 214 N- 2-(2-Methoxyphenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-dimethylphenyl)acetamide EXAMPLE 215 N- 2-(2-Methoxyphenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-dimethylphenyl)acetamide EXAMPLE 216 3,5-Bistrifluoromethylbenzyl- 2-(2,6-dichlorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-amine EXAMPLE 217 N-3,5-Bistrifluoromethylphenyl-N'- 2-(2,6-dichlorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)ethyl!-urea EXAMPLE 218 N- 2-(2,6-Dichlorophenyl-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)acetamide EXAMPLE 219 N- 2-(3,4-Dichlorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-dimethylphenyl)acetamide EXAMPLE 220 N- 2-(2,6-Difluorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-bistrifluormethylphenyl)acetamide EXAMPLE 221 1-(3,5-Bistrifluoromethylphenyl)-2'-(2,3-dichlorophenyl)-2'-(4-(piperidine-1-yl)piperidine-1-yl)-diethylamine EXAMPLE 222 N- 2-(2,3-Dichlorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluorimethylphenyl)acetamide EXAMPLE 223 1-(3,5-Bistrifluoromethylphenyl)-2'-(2,6-dichlorophenyl)-2'-(4-(piperidine-1-yl)piperidine-1-yl)-diethylamine EXAMPLE 224 N- 2-(2-Fluorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-bistrifluormethylphenyl)acetamide EXAMPLE 225 N- 2-(3-Fluorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)acetamide EXAMPLE 226 3,5-Bistrifluoromethylbenzyl- 2-(2,3-dichlorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-amine EXAMPLE 227 N- 2-(3,4-Dichlorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-3,5-bistrifluoromethylbenzamide EXAMPLE 228 N- 2-(2,3-Difluorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-bistrifluormethylphenyl)acetamide EXAMPLE 229 N- 2-(3,5-Difluorophenyl)-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)acetamide EXAMPLE 230 N- 2-(2-Fluorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)acetamide EXAMPLE 231 N- 2-(3-Fluorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)acetamide EXAMPLE 232 N- 2-(4-Fluorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)acetamide EXAMPLE 233 N- 2-(2,3-Difluorophenyl)-2-(4-(piperidine-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)acetamide EXAMPLE 234 N- 2-(3,4-Difluorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)acetamide EXAMPLE 235 2-(3,5-Bistrifluoromethylphenyl)-2'-(3,4-dichlorophenyl)-2'-(4-(piperidine-1-yl)piperidine-1-yl)-diethylamine EXAMPLE 236 N- 2-(2,4-Difluorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)acetamide EXAMPLE 237 N- 2-(3,4-Dichlorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-N-methyl-3,5-bistrifluoromethylbenzamide EXAMPLE 238 N- 2-(3,4-Dichlorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-N-methyl-2-(3,5-bistrifluoromethylphenyl)acetamide EXAMPLE 239 N- 2-Phenyl-2-(4-cyclohexylpiperazine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)-acetamide EXAMPLE 240 N- 2-(2,3-Methylendioxyphenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluormethylphenyl)acetamide EXAMPLE 241 2-(3,5-Bistrifluoromethylphenyl)-2'-phenyl-2'-(4-cyclohexylpiperazine-1-yl)-diethylamine EXAMPLE 242 N- 2-(3,4-Methylendioxyphenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluormethylphenyl)acetamide EXAMPLE 243 2-(3,5-Bistrifluoromethylphenyl)-2'-(2,3-methylendioxyphenyl)-2'-(4-(piperidine-1-yl)piperidine-1-yl)-diethylamine EXAMPLE 244 2-(3,5-Bistrifluoromethylphenyl)-2'-(3,4-methylendioxyphenyl)-2'-(4-(piperidine-1-yl)piperidine-1-yl)-diethylamine EXAMPLE 245 N-3,5-Bistrifluoromethylbenzyl-N- 2-(2,3-dichlorophenyl)-2-(4-(piperidine-1-yl)piperidine-1-yl)-ethyl!acetamide EXAMPLE 246 2-(3,5-Bistrifluoromethylphenyl)-2'-(3,4-dichlorophenyl)-2'-(4-(piperidine-1-yl)piperidine-1-yl)diethylmethylamine EXAMPLE 247 N- 2-(3,4-Dichlorophenyl)-2-(4-(morpholine-4-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)acetamide PHARMACEUTICAL PREPARATIONS:

    ______________________________________                                         Injectable solution                                                            200    mg     Active substance*                                                1.2    mg     Monopotassium dihydrogen phosphate = KH.sub.2 PO.sub.4 **        0.2    mg     Di-sodium hydrogen phosphate = NaH.sub.2 PO.sub.4.2H.sub.2                     O**                                                              (**together constitute a buffer)                                               94     mg     Sodium chloride.sup.#                                            or                                                                             520    mg     Glucose.sup.#                                                    (.sup.# isotonic)                                                              4      mg     Albumin (protease protection)                                    q.s. Sodium hydroxide solution.sup.++                                          q.s. Hydrochloric acid.sup.++                                                  (.sup.++ to adjust the pH to pH 6)                                             Sufficient water to make a 10 ml solution for injections                       Injectable Solution                                                            200    mg     Active substance*                                                94     mg     Sodium chloroide                                                 or                                                                             520    mg     Glucose                                                          4      mg     Albumin                                                          q.s. Sodium hydroxide solution.sup.++                                          q.s. Hydrochloric acid.sup.++                                                  (.sup.++ to adjust the pH to pH 9)                                             Sufficient water to make a 10 ml solution for injections                       Lyophilisate                                                                   200    mg     Active substance*                                                520    mg     Mannitol (isotonic substance/structural component)               4      mg     Albumin                                                          Solvent 1 for lyophilisate                                                     10 ml of water for injections                                                  Solvent 2 for lyophilisate                                                     20 mg of polysorbate ® 80 = Tween ® 80 (surfactant)                    10 ml of water for injections                                                  *Active substance:                                                                            Compounds according to the invention,                                          eg. those of Examples 1 to 180.                                 Dosage for person weighing 67 kg: 1 to 500 mg.                                 ______________________________________                                     

We claim:
 1. A compound of formula (I) ##STR16## wherein A is phenyl optionally substituted by one, two or three R⁴ ; B is --C(O)--CH₂ -- or --C(O)--CH₂ --CH₂ --;Z is piperidinyl substituted by R⁸ ; R¹ is H, C₁₋₆ alkyl or phenyl; R² is H, C₁₋₆ alkyl optionally substituted by a phenyl group or --CO--C₁₋₃ alkyl optionally substituted by a phenyl group, R³ is H, C₁₋₆ alkyl, C₁₋₆ alkyl substituted by one, two or three fluorine atoms, halogen or C₁₋₆ alkoxy, m is 1, 2 or 3;each R⁴ is independently C₁₋₆ alkyl, C₁₋₆ alkyl substituted by one, two or three fluorine atoms, C₁₋₆ alkoxy, C₁₋₆ alkylthio or halogen, or two adjacent R⁴ groups denote --O--(CH₂)--O-- or --(CH₂)₃₋₅ --; R⁸ is hydrogen, C₃₋₇ cycloalkyl, phenyl, ##STR17## C₁₋₆ alkyl, allyl, --(CH₂)₂₋₆ OH, --(C₁₋₃)alkylphenyl, diphenylmethyl or --(C₁₋₃)alkyl(C₃₋₇)cycloalkyl, wherein the phenyl groups may be substituted by one or two substituents selected from methyl, F, Cl, OCH₃, SCH₃, CF₃, OH or NO₂, or substituted by --O--CH₂ --O-- linking two adjacent carbon atoms of the phenyl; or R₈ is --CH₂ OH, --OH, ##STR18## wherein the last 6 groups mentioned are in position 3 or 4; R¹² is H or methyl; andR¹⁴ is H, C₁₋₆ alkyl, phenyl or cyclohexyl, wherein if two R¹⁴ s are present and one of the R¹⁴ s is phenyl or cyclohexyl, the other R¹⁴ must be H.
 2. The compound according to claim 1 wherein B is --C(O)--CH₂ -- and R¹ is H.
 3. The compound N- 2-(3,4-dichlorophenyl)-2-(4-piperidine-1-yl)piperidine-1-yl)-ethyl!-2-(3,5-bistrifluoromethylphenyl)-acetamide.
 4. A pharmaceutical composition comprising a compound according to claim 1, 2 or 3 and a pharmaceutically acceptable carrier. 